Straypuppy 83

So, this may be a stupid question, but I heard somewhere that
you don't have to complete the "Digging up the Past" sidequest to
get the "Silent Hill Tour Guide" trophy. Is that true? I mean, it
didn't show up that it counted as one when I got it earlier (where
I messed up on the "What's your sign" sidequest TT-TT). Please
answer